Acoustic Absorber Panel With Uneven Air Cavity for Low Frequencies
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Solution Overview
Problem
Existing acoustically absorptive panels are inefficient at absorbing low frequencies and lack design versatility for both acoustic performance and aesthetic appeal.
Innovation Solution
The panels incorporate a solid porous absorber with a non-planar rear end surface and an air chamber, tuned for low frequencies, combined with an acoustically transparent front fabric or premium materials, allowing for adjustable visual effects and corner mounting capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional solid porous materials are used for sound absorption, then the panel structure is simple, but the absorption efficiency at low frequencies is insufficient
Solution Approach 1:
The patent implements a nested structure where the porous absorber is placed within a cavity formed by the front panel and rear wall. The absorber occupies the space between these surfaces, creating a nested arrangement that maximizes the use of available volume for acoustic absorption while maintaining a compact overall panel dimensions.
Solution Approach 2:
The patent introduces a third dimension by creating a cavity space between the front panel and rear wall, rather than relying solely on the thickness of the absorber material itself. This dimensional approach allows the system to achieve enhanced low-frequency absorption by utilizing the volumetric space within the panel structure.
2Adaptability or versatility
If the panel uses fixed materials and structure, then the manufacturing process is simple, but the design versatility and aesthetic appeal are limited
Solution Approach 1:
The patent divides the panel into distinct modular components: a front panel, a porous absorber, and a rear wall. This segmentation allows each component to be independently manufactured and selected, enabling customers to choose from various material options for each segment while simplifying the overall manufacturing process through standardized assembly procedures.
Solution Approach 2:
The panel structure is designed to serve multiple functions simultaneously: acoustic absorption, visual aesthetic appeal, and structural mounting. The universal design allows the same basic structure to accommodate different material combinations and configurations, making the panel adaptable to various applications while maintaining ease of manufacture through a standardized framework.
3Adaptability or versatility
If the panel is designed for corner mounting, then the spatial utilization is improved, but the structural complexity increases
Solution Approach 1:
The patent incorporates asymmetric geometric features in the front panel and absorber configuration to enable corner mounting. The non-symmetric shape allows the panel to fit into corner spaces while maintaining proper acoustic absorption characteristics, and the asymmetric design can be achieved through standard manufacturing processes without requiring complex custom fabrication.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances sound absorption at low frequencies and integrates design flexibility, providing improved acoustic performance with aesthetic versatility.
Implementation Method 1
a solid porous absorber with a non-planar rear end surface, which defines, together with the surface to which the panel is attached, an air chamber enhancing absorption
Implementation Method 2
solid porous absorber
Implementation Method 3
an air chamber enhancing absorption, tuned for low frequencies
Data Source
Figure 1a~2
Figure 3a~3c
Figure 3d~5a
AI summary
Acoustically absorptive panel comprising a porous acoustic absorber having a front surface and a non-planar rear surface; a support frame within which said porous acoustic absorber is coupled; an acoustically transparent front fabric affixed on said front surface of said porous acoustic absorber; wherein the non-planar surface is configured such that, when the acoustically absorptive panel is attached to a planar attachment surface, a chamber comprising a uneven depth air cavity for enhancing sound absorption is defined between said non-planar rear surface and the planar attachment surface, wherein said non-planar rear surface of said porous acoustic absorber has complementary surface configurations whereby such two acoustically absorptive panels may be stacked upon one another by coupling their respective rear surfaces. Said board may be directly attached to the support frame and to the porous acoustic absorber, wherein the porous acoustic absorber is surrounded by the support frame.